用于汽车道路行驶排放测量的车载实验系统

An on-board measurement system for vehicle road emission

利用自行开发的单片机测量仪器以及笔记本电脑、一台车载容积式油耗仪和一台车载汽车排气分析仪构成了一套车载实时汽车道路排放测量系统。该系统可以每秒或半秒一次的速率采集记录下汽车的瞬时车速、油耗以及各排放气体浓度值 (HC、CO、NO、O2 及 CO2 )。这些数据可用于计算分析汽车的道路行驶工况的特征、道路废气质量排放特性、汽车实际道路排放因子等。利用该系统初步在天津市典型道路上进行了试验 。

An on board vehicle emission measurement system for experiment under realistic road condition has been developed .The system is composed by a chip processor,a notebook PC,a flow meter and a gas emission analyzer. Using this system ,the vehicle instantaneous speed,fuel consumption rate and volume concentration of exhaust gases(HC,CO,NO,O 2 and CO 2) can be recorded,and driving mode and vehicle's emission factor can be calculated from the recorded data.All these data can be used for analyzing exhaust emission behavior of a vehicle under realistic road conditions.Many tests are being repeated using this system on the typical road in Tianjin city,and emission factors of a Huali brand micro van on Tianjin's urban road have been obtained.