基于比功率的山区公路弯道小型车油耗模型研究

Research on Fuel Consumption Calculation of Small Vehicles at Mountain Road Curve Based on VSP

为了研究山区公路弯道处小型车的油耗特性,以福州市森林公园至鼓岭山区道路弯道上的交通流为研究对象,利用无人机拍摄车辆上下行的视频资料,通过Tracker采集小型车的行驶特性数据,使用Matlab拟合出平均行程速度、断面位置和机动车比功率(VSP)的三维关系模型;根据关系模型和小型车的瞬时平均油耗率建立弯道油耗模型,并计算不同平均行程速度值下小型车在过弯过程的油耗。结果表明:平均行程速度与油耗满足三次多项式关系,弯道油耗模型可在一定程度上对该弯道小型车的过弯油耗进行预测,对实施节能减排策略具有一定的参考作用。

In order to study the fuel consumption characteristics of small vehicles at the mountain road curve,the traffic flow on the road curve from Fuzhou Forest Park to Guling mountain area is taken as the research object.The video data of vehicle up and down were taken by UAV,and the driving characteristic data of small vehicles were collected by tracker;the three-dimensional relationship of average travel speed,section position and vehicle specific power(VSP)were fitted by MATLAB;according to the relationship model and the instantaneous average fuel consumption rate of small cars,a curve fuel consumption model was established,and the fuel consumption of small cars in the process of turning was calculated under different average travel speed values.The results show that the relationship between the average travel speed and the fuel consumption satisfies the cubic polynomial.The curve fuel consumption model can predict the fuel consumption of the small car in the curve to a certain extent,which has a certain reference value for the implementation of energy saving and emission reduction strategies.