汽车行驶工况的能耗相关统计特征研究

Research on the Statistical Characteristics of Energy Consumption under Driving Condition

为了基于汽车行驶工况更合理地设计车辆动力系统,需要对汽车行驶工况能耗相关统计特征值进行提取。本文针对纯电动汽车最关心的统计特征进行推导提取,基于能量消耗率计算原理,推导出风阻强度系数与制动能量回收强度系数,并对其他统计特征与能耗关系进行分析。最后对各类现行标准中的工况以及用户实测工况进行对比分析,提出应根据实际用户特征定制化设计车辆风阻系数及制动能量回收策略的措施。

In order to design the vehicle power system more reasonably according to the driving conditions,it is necessary to extract the statistical eigenvalues related to the energy consumption of the vehicle driving conditions.Based on the calculation principle of energy consumption rate,the wind resistance strength coefficient and braking energy recovery strength coefficient are derived,and the relationship between other statistical characteristics and energy consumption is analyzed.Finally,the working conditions in various current standards and the user’s measured working conditions are compared and analyzed,and the measures to design the vehicle wind resistance coefficient and braking energy recovery strategy should be customized according to the actual user characteristics are proposed.