本文選題：交通狀態(tài) + 公交車��； 參考：《環(huán)境科學(xué)研究》2017年11期

【摘要】：為評估不同交通狀態(tài)下公交車運(yùn)行特征和排放水平的差異,現(xiàn)場采集廣州市B9、226線路公交車的逐秒GPS數(shù)據(jù),以ES-VSP(發(fā)動機(jī)負(fù)荷-機(jī)動車比功率)分布表征暢通、輕度擁堵和中度擁堵下的公交車運(yùn)行特征,結(jié)合IVE(international vehicle emission)模型求得公交車平均排放因子并分析其差異.結(jié)果表明:(1)所測公交車的發(fā)動機(jī)低負(fù)荷區(qū)中bin11(-1.6ES≤3.1,-2.9 k W/t≤VSP1.2 k W/t)頻率范圍為50.55%~83.39%,中度擁堵時bin 11頻率是暢通時的1.1~1.3倍;(2)3種交通狀態(tài)下公交車的CO、VOC(運(yùn)行產(chǎn)生的揮發(fā)性有機(jī)物)、VOCevap(蒸發(fā)產(chǎn)生的揮發(fā)性有機(jī)物)、NOx(氮氧化物)和PM(顆粒物)平均排放因子范圍分別為7.63~11.40、0.26~0.46、0.68~1.56、0.32~0.51和0.72×10-2~1.28×10-2g/km;(3)同種交通狀態(tài)下,主干路公交車專用道和BRT車道的公交車的大部分污染物平均排放因子低于次干路混行車道、主干路混行車道,中度擁堵時主干路BRT車道的CO、VOC、VOCevap、NOx和PM平均排放因子相對其他道路最低,分別為7.66、0.27、0.87、0.32和0.75×10-2g/km;(4)次干路混行車道、主干路混行車道的公交車污染物平均排放因子隨交通狀態(tài)愈加擁堵而增大,但暢通時主干路BRT車道的公交車行駛速度、加速度較高,導(dǎo)致CO平均排放因子較高,對應(yīng)3種交通狀態(tài)其比例為1.0∶0.9∶0.8.研究顯示,交通狀態(tài)對公交車運(yùn)行和排放具有顯著影響.
[Abstract]:In order to evaluate the difference of bus operating characteristics and emission level under different traffic conditions, the GPS data of bus on line B9226 in Guangzhou were collected on the spot and characterized by ES-VSP (engine load-vehicle specific power) distribution. The characteristics of bus operation under mild and moderate congestion were analyzed. The average emission factors of buses were calculated by using the Ive (international vehicle emission) model and their differences were analyzed. The results show that: (1) the frequency range of bin11 (-1.6ES 鈮，

本文編號：2107312