引用本文:杨鹏史,刘永红,黄玉婷,林晓芳,沙志仁,等.基于ES-VSP分布的交通状态对公交车动态排放的影响[J].环境科学研究,2017,30(11):1793-1800.
YANG Pengshi,LIU Yonghong,HUANG Yuting,LIN Xiaofang,SHA Zhiren,et al.Effects of Traffic States on Dynamic Emissions of Buses based on ES-VSP Distribution[J].Reserrch of Environmental Science,2017,30(11):1793-1800.]
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 61次   下载 52 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于ES-VSP分布的交通状态对公交车动态排放的影响
杨鹏史1,2, 刘永红1,2, 黄玉婷1,2, 林晓芳1,2, 沙志仁3
1. 中山大学工学院智能交通研究中心, 广东 广州 510006;2. 广东省交通环境智能监测与治理工程技术研究中心, 广东 广州 510275;3. 广东方纬科技有限公司, 广东 广州 510006
摘要:
为评估不同交通状态下公交车运行特征和排放水平的差异,现场采集广州市B9、226线路公交车的逐秒GPS数据,以ES-VSP (发动机负荷-机动车比功率)分布表征畅通、轻度拥堵和中度拥堵下的公交车运行特征,结合IVE (international vehicle emission)模型求得公交车平均排放因子并分析其差异.结果表明:①所测公交车的发动机低负荷区中bin11(-1.6 < ES ≤ 3.1,-2.9 kW/t ≤ VSP < 1.2 kW/t)频率范围为50.55%~83.39%,中度拥堵时bin 11频率是畅通时的1.1~1.3倍;② 3种交通状态下公交车的CO、VOC (运行产生的挥发性有机物)、VOCevap(蒸发产生的挥发性有机物)、NOx(氮氧化物)和PM (颗粒物)平均排放因子范围分别为7.63~11.40、0.26~0.46、0.68~1.56、0.32~0.51和0.72×10-2~1.28×10-2 g/km;③同种交通状态下,主干路公交车专用道和BRT车道的公交车的大部分污染物平均排放因子低于次干路混行车道、主干路混行车道,中度拥堵时主干路BRT车道的CO、VOC、VOCevap、NOx和PM平均排放因子相对其他道路最低,分别为7.66、0.27、0.87、0.32和0.75×10-2 g/km;④次干路混行车道、主干路混行车道的公交车污染物平均排放因子随交通状态愈加拥堵而增大,但畅通时主干路BRT车道的公交车行驶速度、加速度较高,导致CO平均排放因子较高,对应3种交通状态其比例为1.0:0.9:0.8.研究显示,交通状态对公交车运行和排放具有显著影响.
关键词:  交通状态  公交车  GPS  VSP (机动车比功率)  平均排放因子
DOI:10.13198/j.issn.1001-6929.2017.03.10
分类号:X51
基金项目:广东省自然科学基金项目(2016A030313297);广东省科技计划项目(2015B010110005,201704020053)
Effects of Traffic States on Dynamic Emissions of Buses based on ES-VSP Distribution
YANG Pengshi1,2, LIU Yonghong1,2, HUANG Yuting1,2, LIN Xiaofang1,2, SHA Zhiren3
1. Center of Intelligent Traffic Research, School of Engineering, Sun Yat-sen University, Guangzhou 510006, China;2. Guangdong Provincial Engineering Research Center for Traffic Environmental Monitoring and Control, Guangzhou 510275, China;3. Guangdong Fundway Technology Co., Ltd., Guangzhou 510006, China
Abstract:
In order to evaluate bus emissions in different traffic states, second-by-second GPS data of No.B9 and No.226 buses in Guangzhou were collected, and Engine Stress-Vehicle Specific Power(ES-VSP) distribution was used to characterize the bus operation conditions during free-flow, mild congestion and moderate congestion. Combining ES-VSP distribution and the International Vehicle Emission(IVE) model, the average emission factors of the buses were calculated, and the differences were analyzed. The results showed that frequencies of bin11 (-1.6evap (volatile organic compounds emission from evaporation), NOx (nitrogen oxide) and PM (particulate matter) were 7.63-11.40, 0.26-0.46, 0.68-1.56, 0.32-0.51 and 0.72×10-2-1.28×10-2 g/km, respectively. In the same traffic state, the bus average emission factors for ordinary bus lane or BRT lane of arterial road were mostly lower than those of mixed lane of secondary road or arterial road. The buses' average emission factors of CO, VOC, VOCevap, NOx and PM of BRT lane in moderate congestion state were 7.66, 0.27, 0.87, 0.32 and 0.75×10-2 g/km respectively, which were lower than those of the other three types of lane. With a more congested traffic state in mixed lane of secondary road or arterial road, the bus average emission factors increased. However, the higher speed and acceleration of buses on free-flow BRT lanes made the CO average emission factor higher. The CO average emission factor ratio was 1:0.9:0.8, corresponding to the three traffic states. The research showed that traffic states have an important influence in operation and emission of buses.
Key words:  traffic state  bus  GPS  VSP (vehicle specific power)  average emission factor