基于比功率分布的公交车行驶周期建立方法研究  

Establishing Method of Driving Cycles for Transit Buses Based on VSP Distributions

作　　者：赖瑾璇[1] 于雷[1,2] 宋国华[1] 郭沛 陈旭梅[1] 

机构地区：[1]北京交通大学城市交通复杂系统理论与技术教育部重点实验室,北京100044 [2]美国德克萨斯南方大学科技学院,休斯顿77004 [3]中咨泰克交通工程集团有限公司,北京100083

出　　处：《交通运输系统工程与信息》2014年第1期209-214,228,共7页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家自然科学基金(71273024;51208033);国家重点基础研究发展规划项目计划(973计划2012CB725403)

摘　　要：行驶周期是公交车排放预测的核心数据之一。本文采用便携式车载GPS收集了北京市14条公交线路重型柴油车的313 499条有效数据,并基于比功率分布方法,建立了北京市BRT公交、快速公交和常规公交车在低速区间、中速区间和高速区间的行驶周期,并对所建立的行驶周期进行了验证。结果表明:本文所建立的行驶周期与验证实测数据比功率分布的误差小于2%,而四工况的相对误差达5.7%,这表明本文建立的行驶周期更能准确地反映北京市公交车与排放相关的特征。The driving cycle is one key parameter for the vehicle emission estimation of transit buses.This paper collects a total of 313,499 data from heavy duty diesel vehicles of 14 transit lines using the portable GPS,by which different driving cycles for BRT,rapid transit buses,and regular transit buses are developed and validated for low,middle and high speed ranges based on the vehicle specific power （VSP）.It is found from the results that the RMSEs between VSP distributions of the developed driving cycles and the validation data sample is less than 2％,while RMSEs between VSP distributions of the Four-Mode driving cycle and the validation data sample are as much as 5.7％.It indicates that the developed driving cycles can estimate the emissions from the transit buses more accurately than the Four-Mode cycle.

关 键 词：城市交通 行驶周期 基于比功率参数方法 重型公交车 

分 类 号：U268.6[机械工程—车辆工程]