信号交叉口车辆累积能耗估计研究

Study on Vehicle Cumulative Energy Consumption at Signalized Intersection

车辆通过信号交叉口时需要加减速改变行驶速度,致使交叉口成为了城市道路交通网络中的高能耗区域。因此需要对通过信号交叉口车辆产生的累积能耗进行研究。为了对信号周期内通过交叉口的车辆进行累积能耗分析,在界定交叉口范围的基础上,分析信号周期内车辆的速度轨迹,主要考虑了周期内不同阶段(红灯阻滞阶段、绿灯阻滞阶段、绿灯延误阶段、绿灯通行阶段)的车辆减速、怠速、加速和匀速轨迹,依据不同速度状态的油耗表现,确立了车辆累积能耗估计模型。为了验证模型的准确性,与AFCM模型对比分析,结果表明此模型具有一定的合理性。进一步依据此模型分析了信号配时参数对于车辆累积能耗的影响,说明了优化配时参数对于信号交叉口车辆节能具有重要意义。

The vehicle need to change the travel speed when passing through the signal intersection,thus,the intersection becomes a high energy consumption area in urban road traffic network.It is necessary to study the cumulative energy consumption generated by vehicles at signalized intersections.In order to analyze the cumulative energy consumption of vehicles that passing through the intersection in the signal period,based on defining the scope of the intersection,analysis of the vehicle velocity trajectory in signal period,the vehicle deceleration,idle speed,acceleration and constant speed trajectory were considered in different stages(red light blocking stage,green block stage,green light delay stage,green light passage stage),according to the fuel consumption of the different speed status,the cumulative energy consumption estimation model was established.Comparative analysis with AFCM model for verify the accuracy of the model,the results show that the model is reasonable.Based on this model,the influence of the signal cycle length on the cumulative energy consumption was analyzed,it is shown that the optimal timing parameters are of great significance for the vehicle energy saving at signalized intersections.